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COFFEE BEAN GRADING 1/ 64 in ch m m Classification Central America and Mexico Colombia Africa and India 20 8 Very Large Superior Supremo AA 19 .5 7. 75 19 7. 5 18 .5 7. 25 Large 18 7 A 17 6. 75 16 6. 5 Medium Segundas Excelso B 15 6 14 5. 5 Small Terceras C 13 5. 25 Shells Caracol PB 12 5 11 4. 5 Caracolli 10 4 9 3. 5 Caracolillo 8 3 Coffee Laboratory 589 Rappahannock Drive White Stone Va 22578 TEL (804) 435-5522 Coffee bean grading sieves, are made with round hole perforated steel plate, either for use with a mechanical sieve shaker (left), or for sorting by hand movement (right), using square wooden frames. The holes are punched in 64th inch increments.
